XYZ Racing Tarmac Rally Coilovers — Subaru IMPREZA STI 4WD 1992-2000

The Impreza STI 4WD’s boxer-engined, symmetrical all-wheel-drive layout was built for exactly this kind of work: sealed-stage tarmac events where the car has to transfer load through four contact patches at once, not just two. Stock dampers on this GC8-era chassis were never specified for the compression rates a closed tarmac stage throws up – patched surfaces, adverse cambers, mid-corner bumps that unsettle the rear axle mid load-transfer.

The Tarmac Rally coilover replaces that setup with a damper tuned specifically for stage-surface abuse rather than track-smooth asphalt or road comfort. It keeps the STI’s AWD system doing its job – putting power down through all four corners – even when the road beneath it is anything but smooth.

What this coilover does for your 1992-2000 Subaru Impreza STI 4WD

On a stage car, the biggest damping failure is a wheel that can’t stay in contact with a broken surface long enough to keep transmitting drive. This coilover’s damping is set up to absorb sharp compressions – potholes, ridges, patched sections – without punching the full impact through into the chassis, which keeps the STI’s symmetrical AWD loading all four corners instead of unloading over a bump. That means steadier traction out of tarmac-stage corners and less of the rear-end skip that unsettles a GC8 under hard direction changes. Suppressing body shock through the stroke also means less time spent correcting for chassis movement and more time reading the road ahead – useful when a pace note calls a compression at speed. The net result on this era of Impreza is a car that holds its line over the same broken tarmac that would have a stock-damped STI searching for grip.

About the Tarmac Rally coilover

The Tarmac Rally coilover is built around damping tuned for sealed-stage work, not circuit driving or fast-road comfort – it’s set up to absorb the impact of uneven pavement rather than iron it out for ride quality. Big hits across major bumps get soaked up rather than punched through to the body, suppressing the shock the chassis would otherwise take and helping the tyre keep its contact patch loaded through the impact. That control over body movement is what gives the car settled, predictable handling through a stage instead of pitching and wallowing after every compression. The valving in this range comes directly from XYZ Racing’s own tarmac rally programme – the settings aren’t a generic road-going compromise, they’re carried over from cars actually run on closed tarmac stages. It’s the right spec for an STI 4WD that’s going to cover real stage kilometres on imperfect surfaces, not one that only ever sees a smooth circuit or a daily commute.

Fitment for the Subaru IMPREZA STI 4WD (1992-2000)

This kit is built for the Subaru IMPREZA STI 4WD, chassis code SU04-1, covering the 1992 to 2000 model years. Confirm your build date and chassis code against SU04-1 before ordering – Impreza generations either side of this range use different mounting points and will not accept this kit.

What buyers also search for

• Subaru Impreza STI 4WD suspension setup built for sealed-stage tarmac rally work.
• Impreza STI damping that copes with broken and patched stage surfaces.
• Subaru Impreza STI 4WD coilover kit for rally-specific handling rather than road comfort.
• Tarmac rally coilovers matched to the 1992-2000 Impreza STI’s symmetrical AWD platform.

Spec the Tarmac Rally coilover to your STI 4WD’s stage programme – configure yours below.